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ULA Book - Target Audience?This is probably of most intrerest to hardware chaps, but a greater community input would be good. I've been turning all my ULA analysis into a love…
... Spectrum and it's ULA. Part2: The ULA in depth. Part3: ... suggest maybe sticking with the ULA for the moment, but ... ULA versions differ, and perhaps discussion of the TSxxxx machines and 128 ... nice, showing how the ULA interacts with the other components ... -
48K games that don't work on a +2Not sure if there is already a thread about this but recently I've noticed some old 48K games will not run on my +2 - even in 48K mode. Examples are…
... to "see" what the ULA was doing. When port 255 ... being generated by the ULA as it displays the ... example, but Short Circuit 128 as I mentioned earlier is ... The Z80 in a 128 machine is slightly quicker than ... br />
10) The 128 ROMs changed between each of ... -
+3 Audio hates me with a passionHihi Since nobody seemed to have a spare +3B board, I've been trying to replace the audio entirely, aiming for a speaker inside the machine Since p…
... 8bit.yarek.pl/computer/zx.128/]HERE[/url]
[img ... of small differences between Sinclair 128 and Amstrad +2.
... from Pin 34(Ear) of ULA.
From Pin 35( ... Mic) of ULA going to MC1376 pin 5 ... instead of 6.8k Sinclair 128.
MIC socket is ... -
One's speccy is unwell, can anybody help?Hi chaps! This would be my first post here, so hello to all :smile: I've got a 128+ heatsink speccy that seems to have a display issue whereby after…
... Speccy to try to swap ULA's with ?
Anyway ... />
I've got another 128+ that's semi-dead (powers ... best candidate to pop the ULA out of? -
The definitive Spectrum project??We know that the Spectrum has been put almost to its limits after all these years of life, but I would like to know which would be the definitive pro…
... need to reverse engineer the 128 ULA).[/QUOTE]
Oh I ... -
Questions about the Speccy and it's emulationOut of interest, and to raise another interesting discussion, I have some questions about the Spectrum and it's emulation; 1) Is everything known ab…
... RAM speed depends strictly from ULA and CPU clock speed, so ... and Paperboy :x). Is the 128 faster in other ways too ... -
Question about something I don't know what is called.I am interested in reading about something which I don't know what is called (duh). I am looking for (online/offline) reading material which explain…
... can be programmed to the ULA's I/O port. When ... the other.
The ULA's I/O port is ... 32777,4
POKE 32778,128
RANDOMIZE USR 32768
What's the RAND USR code for the test screen?And what versions of hardware does it work on? Ta!
... :
[QUOTE]In the 128 BASIC editor type "copy randomize ... here you can test the ULA, keyboard, disk driver, tape input ...+2a datacorder problemsHelloooo, how's it going? Reason I'm posting is that 1) I'm a massive speccy fan, it was the first range of computers I ever owned 2) I'm having rea…
... to do similar with a 128+ years ago (using it with ... me which chip is the ULA? I'm guessing its the ...RGB on speccy ?hi, just a question : are you aware of scene demo trying emulate rgb ? i was a bit ill last few days so laying in bad i come with a (stupid ?) idea.…
... -Cat;315263]I wonder if 128 would be able to do ... of attribute data per scanline. 128 screen paging does help in ... whether you're behind the ULA or ahead of it (which ... Contour graphics mode on a 128 - the one where each attribute ...Difference in emulator screen sizes and coloursSeeing as Greencard's gone out drinking... I've done a comparison between Spectaculator and ZXSpin. ZXSpin's full screen with border is taller than S…
... /../faq/reference/pinouts.htm#ULA"]ULA[/URL]; both the interrupt ... forums/../faq/reference/pinouts.htm#ULA"]ULA[/URL] has started displaying ... /../faq/reference/pinouts.htm#ULA"]ULA[/URL] has been observed ... therefore timed as follows: 128 T states of screen, ...RGB on 48KIs it possible to get better picture (RGB, or at least composite video) from ZX 48K without opening it? (using the expansion port only) I think there…
[QUOTE=ingo;321559]ULA does this for simply forming ... .
Ingo[/QUOTE]
ULA gives out YUV because Sonclair ... then. In Spectrum 128 we have RGB from ULA mostly because it ...RGB on 48KIs it possible to get better picture (RGB, or at least composite video) from ZX 48K without opening it? (using the expansion port only) I think there…
[QUOTE=piters;321850]ULA gives out YUV because Sonclair ... then. In Spectrum 128 we have RGB from ULA mostly because it ... uses RGB internally throughout the ULA, and then goes through some ...Help! USR 0 mode?Right, first of all, I know that this is in the wrong forum, and secondly it's maybe against the TOS anyway, as it's just asking people to read and p…
... out
Leaving the 128 in place would mean that ... know what happens regarding the 128 & 48 modes but I ... switching which occurs in the ULAI killed my Spectrum last night...*sobs*I got all nostalgiac after watching Labyrinth last night (a festive tradition), and felt the need to get the Speccy out. I played "Rookie" (with the …
... huge risk of frying the ULA. Some of it is ... are three basic types of ULA chip used in spectrums. The ... early 128K models (128 and gry +2) the ULA was a larger ... black +2/3 the ULA is a flat rectangular surface ... you really will blow the ULA if you're not careful ...DivIDE on Spectrum +3Hi all, Is it possible to use the DivIDE on the Spectrum +3 in 128K mode? I have the 'A' jumper set on the board, but my +3 resets into 48K mode wit…
... ports only when you want 128 mode support and then switch ... ZX will crash, then +3 ULA detect ROMOE signals in allram ...DivIDE on Spectrum +3Hi all, Is it possible to use the DivIDE on the Spectrum +3 in 128K mode? I have the 'A' jumper set on the board, but my +3 resets into 48K mode wit…
... for use with ZX16/48/128/+2(grey). DIVIDE is yet ... ,xxxxxxx1 can destroy DIVIDE or ULA chip on your ZX+2A ...Debian linux on a Speccy!Ok, not [i]quite[/i] what you're expecting, but very cool nonetheless. [url]http://www.retrothing.com/2009/04/modding-a-sinclair-zx-spectrum-to-run-…
... the video RAM. On a 128 you can use the shadow ... without ripping out the Spectrum ULA and basically turning the Spectrum ...zx81 help neededHi, I got a ZX81 today supposedly in working order, it was for the first two minutes, but after that the keyboard produces the wrong letter, number …
... the ROM chip or the ULA chip is failing.
If ... PRINT CHR$ I; CHR$ (I+128);
40 NEXT I[/CODE ...Black screen of deathI recently aquired a zx spectrum (revision 3b) of the rubber key variety. it was all running smoothly(for about an hour after pluggin in), i left the…
I have a couple of ULA Dead Speky +2 128's
I am happy to donate parts for the cause, let me know what you need.Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…
... />
NUMBER COLOUR MEMORY ISSUE ULA DATECODE Z80 DATECODE COMMENTS
128,grey keys,32K daughterboard added ...Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…
... =cheveron]If you replace the ULA in the original machine with ... seem to prefer the Spectrum 128. There's no accounting for ...+2A/+3 compatibility fixes thread!It might be a good idea to keep these fairly common +2A/+3 compatibility fixes (and requests) in a single thread for quick reference ;) Let's start …
... ZX Spectrum 128/+2. +2A/B contain new modern ULA and some ...Preliminary MontyHey All... A new 2009 production (port from Atari) of a game called "Preliminary Monty" is out. It is a VERY nice platform game - with a bit "crude…
... example:
HALT ;after interrupt ula draw border and on data ... port after interrupt
AND 128 ;test only D7
LD ...Is this worth a punt?[URL="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=370259701244&ssPageName=STRK:MEWAX:VRI"]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&it…
... /> I would buy an original 128 though obviously :) (I have never ... to bad luck) and the ULA died after a few months ...More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... . You'd need the 128K ULA for the memory paging, amongst ... /> You could replace the 48 ula with an upgrade with more ... /> Other than that, doable. :-) the 128 ula specifics are not difficult to ...The 256 colour spectrumIt's amazing what you can do these days. [img]http://sites.google.com/site/pauldunn/multi64.png[/img] D.
... idea[/I] how the new ULA works. Not proud of this ... colours.
The new ULA gives two new capabilities: firstly ... gets you from 64 to 128 colours - to get to 256 ... down the screen. (The new ULA has a limit of 256 ...The 256 colour spectrumIt's amazing what you can do these days. [img]http://sites.google.com/site/pauldunn/multi64.png[/img] D.
... colours.
The new ULA gives two new capabilities: firstly ... gets you from 64 to 128 colours - to get to 256 ... down the screen. (The new ULA has a limit of 256 ...More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... be preferable, but if the ULA can only read two bytes ... could have gone into the ULA from the beginning was a ... , you just start with a 128.just thinking about ...compo for zx 16k ? anyone ?
... no bigger than the original ULA. [Edit] Multi-loads are definitely ... on 48 or even on 128. but still, you have about ...
